Assignment 3-2D Element Formulation Challenge

Aim: Observe the effect of hourglass when the beam is deformed.

Procedure:

1)Initially, simulate the beam model as Ishell=0, from the results it can be seen energy error is -13%, which means some energy is desipated and from the plots, the hourglass is not stabilized. (Hourglass effect is seen because of reduced integration scheme in 1st order element).

2)To capture the deformation of the elements properly, Ishell=24. This card captures the effect properly.

Results:

The above image shows the effect of hourglass energy, left plot is without hourglass control which means the undergone deformation without any strain energy. (i.e zero strain energy) and the right plot is showing the control hourglass by using Ishell=24.

The above image shows the comparison of results. The displacment change is minute.

Ishell=0:

Ishell=24: